// // RITLPhotoHorBrowerViewController.m // RITLPhotoDemo // // Created by YueWen on 2018/4/27. // Copyright © 2018年 YueWen. All rights reserved. // #import "RITLPhotosHorBrowseViewController.h" #import "RITLPhotosBrowseVideoCell.h" #import "RITLPhotosBrowseImageCell.h" #import "RITLPhotosBrowseLiveCell.h" #import "RITLPhotosBottomView.h" #import "NSBundle+RITLPhotos.h" #import "PHAsset+RITLPhotos.h" #import "RITLKit.h" #import "UIView+RITLFrameChanged.h" #import "Masonry.h" #import "RITLPhotosMaker.h" #import "RITLPhotosDataManager.h" #import "RITLPhotosConfiguration.h" #import "UICollectionViewCell+RITLPhotosAsset.h" #import "UICollectionView+RITLIndexPathsForElements.h" #import "KKImageEditorViewController.h" #define RITLPhotosHorBrowseCollectionSpace 3 static NSString *const RITLBrowsePhotoKey = @"photo"; static NSString *const RITLBrowseLivePhotoKey = @"livephoto"; static NSString *const RITLBrowseVideoKey = @"video"; typedef NSString RITLHorBrowseDifferencesKey; static RITLHorBrowseDifferencesKey *const RITLHorBrowseDifferencesKeyAdded = @"RITLDifferencesKeyAdded"; static RITLHorBrowseDifferencesKey *const RITLHorBrowseDifferencesKeyRemoved = @"RITLDifferencesKeyRemoved"; @interface RITLPhotosHorBrowseViewController () /// 顶部模拟的导航 @property (nonatomic, strong) UIView *topBar; /// 返回的按钮 @property (nonatomic, strong) UIButton *backButton; /// 状态按钮 @property (nonatomic, strong) UIButton *statusButton; /// 显示索引的标签 @property (strong, nonatomic) IBOutlet UILabel *indexLabel; /// 展示图片的collectionView @property (strong, nonatomic) IBOutlet UICollectionView *collectionView; /// 底部的视图 @property (nonatomic, strong) RITLPhotosBottomView *bottomView; /// 用于计算缓存的位置 @property (nonatomic, assign) CGRect previousPreheatRect; /// 预览的collectionView @property (nonatomic, strong) UICollectionView *browseCollectionView; // Data @property (nonatomic, strong) RITLPhotosDataManager *dataManager; @property (nonatomic, assign) NSInteger cellRow; @property (nonatomic, strong) RITLPhotosBrowseImageCell *cell; // 记录一下编辑的cell @property (nonatomic, assign) BOOL isEdit; @property (nonatomic, strong) PHAsset *asset; @end @implementation RITLPhotosHorBrowseViewController - (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) { self.dataManager = RITLPhotosDataManager.sharedInstance; } return self; } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. self.previousPreheatRect = CGRectZero; [self resetCachedAssets]; self.bottomView = RITLPhotosBottomView.new; self.bottomView.backgroundColor = [UIColor.blackColor colorWithAlphaComponent:0.8]; // self.bottomView.previewButton.hidden = true;//暂时屏蔽掉图片编辑功能 self.bottomView.isEdit = YES; [self.bottomView.previewButton addTarget:self action:@selector(editImage) forControlEvents:UIControlEventTouchUpInside]; self.bottomView.fullImageButton.selected = self.dataManager.isHightQuality; [self.bottomView.fullImageButton addTarget:self action:@selector(hightQualityShouldChanged:) forControlEvents:UIControlEventTouchUpInside]; [self.bottomView.sendButton addTarget:self action:@selector(sendButtonDidClick:) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:self.collectionView]; //进行注册 [self.collectionView registerClass:RITLPhotosBrowseImageCell.class forCellWithReuseIdentifier:RITLBrowsePhotoKey]; [self.collectionView registerClass:RITLPhotosBrowseVideoCell.class forCellWithReuseIdentifier:RITLBrowseVideoKey]; if (@available(iOS 9.1,*)) { [self.collectionView registerClass:RITLPhotosBrowseLiveCell.class forCellWithReuseIdentifier:RITLBrowseLivePhotoKey]; } //初始化视图 self.topBar = ({ UIView *view = [UIView new]; view.backgroundColor = [UIColor.blackColor colorWithAlphaComponent:0.75]; // view.backgroundColor = THEMECOLOR; view; }); self.backButton = ({ UIButton *view = [UIButton new]; view.adjustsImageWhenHighlighted = false; view.backgroundColor = [UIColor clearColor]; [view addTarget:self action:@selector(pop) forControlEvents:UIControlEventTouchUpInside]; view.imageEdgeInsets = UIEdgeInsetsMake(13, 5, 5, 23); [view setImage:NSBundle.ritl_browse_back/*@"RITLPhotos.bundle/ritl_browse_back".ritl_image*/ forState:UIControlStateNormal]; view; }); self.statusButton = ({ UIButton *view = [UIButton new]; view.adjustsImageWhenHighlighted = false; view.backgroundColor = [UIColor clearColor]; view.imageEdgeInsets = UIEdgeInsetsMake(10, 11, 0, 0); [view setImage:NSBundle.ritl_brower_selected/*@"RITLPhotos.bundle/ritl_brower_selected".ritl_image*/ forState:UIControlStateNormal]; [view addTarget:self action:@selector(assetStatusDidChanged:) forControlEvents:UIControlEventTouchUpInside]; view; }); self.indexLabel = ({ UILabel *label = [UILabel new]; label.backgroundColor = RITLColorFromIntRBG(9, 187, 7); label.text = @"0"; label.font = RITLUtilityFont(RITLFontPingFangSC_Regular, 15); label.textColor = UIColor.whiteColor; label.textAlignment = NSTextAlignmentCenter; label.layer.cornerRadius = 30 / 2.0; label.layer.masksToBounds = true; label.hidden = true; label; }); [self.view addSubview:self.topBar]; [self.view addSubview:self.bottomView]; [self.view addSubview:self.browseCollectionView]; [self.topBar addSubview:self.backButton]; [self.topBar addSubview:self.statusButton]; [self.topBar addSubview:self.indexLabel]; UIView *lineView = ({ UIView *view = [UIView new]; view.backgroundColor = RITLColorSimpleFromIntRBG(66); view.frame = @[@0,@79.3,@(RITL_SCREEN_WIDTH),@0.7].ritl_rect; view; }); //模拟横线 [self.browseCollectionView addSubview:lineView]; //进行布局 [self.collectionView mas_makeConstraints:^(MASConstraintMaker *make) { make.top.bottom.offset(0); make.left.offset(-1 * RITLPhotosHorBrowseCollectionSpace); make.right.offset(RITLPhotosHorBrowseCollectionSpace); }]; [self.topBar mas_makeConstraints:^(MASConstraintMaker *make) { make.left.top.right.offset(0); make.height.mas_equalTo(RITL_DefaultNaviBarHeight); }]; [self.backButton mas_makeConstraints:^(MASConstraintMaker *make) { make.left.offset(15); make.width.height.mas_equalTo(40); make.bottom.inset(10); }]; [self.statusButton mas_makeConstraints:^(MASConstraintMaker *make) { make.right.inset(15); make.width.height.mas_equalTo(40); make.bottom.inset(10); }]; [self.indexLabel mas_makeConstraints:^(MASConstraintMaker *make) { make.width.height.mas_equalTo(30); make.bottom.inset(10); make.right.inset(15); }]; [self.bottomView mas_makeConstraints:^(MASConstraintMaker *make) { make.bottom.left.right.offset(0); make.height.mas_equalTo(RITL_DefaultTabBarHeight - 3); }]; [self.browseCollectionView mas_makeConstraints:^(MASConstraintMaker *make) { make.bottom.equalTo(self.bottomView.mas_top).offset(0); make.left.right.offset(0); make.height.mas_equalTo(80); }]; //如果存在默认方法 if ([self.dataSource respondsToSelector:@selector(defaultItemIndexPath)]) { [self.collectionView scrollToItemAtIndexPath:self.dataSource.defaultItemIndexPath atScrollPosition:UICollectionViewScrollPositionRight animated:false]; [self updateTopViewWithAsset:[self.dataSource assetAtIndexPath:self.dataSource.defaultItemIndexPath]]; } // 记录当前控制器的cell.indexPath.row self.cellRow = self.dataSource.defaultItemIndexPath.row; //接收cell的单击通知 [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(horBrowseTooBarChangedHiddenStateNotificationationHandler:) name:RITLHorBrowseTooBarChangedHiddenStateNotification object:nil]; //KVO [self.dataManager addObserver:self forKeyPath:@"count" options:NSKeyValueObservingOptionNew context:nil]; [self.dataManager addObserver:self forKeyPath:@"hightQuality" options:NSKeyValueObservingOptionNew context:nil]; //更新发送按钮 [self updateBottomSendButton]; [self updateBrowseCollectionView]; } - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; [self.navigationController setNavigationBarHidden:true animated:true]; } - (void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; [self.navigationController setNavigationBarHidden:false animated:true]; self.backHandler(self.isEdit,self.asset); } - (void)viewDidAppear:(BOOL)animated { [super viewDidAppear:animated]; [self updateCachedAssets]; } - (void)resetCachedAssets { [self.dataSource.imageManager stopCachingImagesForAllAssets]; self.previousPreheatRect = CGRectZero; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (BOOL)prefersStatusBarHidden { return true; } - (void)dealloc { if (self.isViewLoaded) { [[NSNotificationCenter defaultCenter] removeObserver:self]; [self.dataManager removeObserver:self forKeyPath:@"count"]; [self.dataManager removeObserver:self forKeyPath:@"hightQuality"]; } NSLog(@"[%@] is dealloc",NSStringFromClass(self.class)); } - (void)pop { [self.collectionView.visibleCells makeObjectsPerformSelector:@selector(stop)]; [self.navigationController popViewControllerAnimated:true]; } #pragma mark - Cache - (void)updateCachedAssets { if (!self.isViewLoaded || self.view.window == nil) { return; } //可视化 CGRect visibleRect = CGRectMake(self.collectionView.ritl_contentOffSetX, self.collectionView.ritl_contentOffSetY, self.collectionView.ritl_width, self.collectionView.ritl_height); //进行拓展 CGRect preheatRect = CGRectInset(visibleRect, -0.5 * visibleRect.size.width, 0); //只有可视化的区域与之前的区域有显著的区域变化才需要更新 CGFloat delta = ABS(CGRectGetMidX(preheatRect) - CGRectGetMidX(self.previousPreheatRect)); if (delta <= self.view.ritl_width / 3.0) { return; } //获得比较后需要进行预加载以及需要停止缓存的区域 NSDictionary *differences = [self differencesBetweenRects:self.previousPreheatRect new:preheatRect]; NSArray *addedRects = differences[RITLHorBrowseDifferencesKeyAdded]; NSArray *removedRects = differences[RITLHorBrowseDifferencesKeyRemoved]; ///进行提前缓存的资源 NSArray *addedAssets = [[[addedRects ritl_map:^id _Nonnull(NSValue * _Nonnull rectValue) { return [self.collectionView indexPathsForElementsInRect:rectValue.CGRectValue]; }] ritl_reduce:@[] reduceHandler:^NSArray * _Nonnull(NSArray * _Nonnull result, NSArray *_Nonnull items) { return [result arrayByAddingObjectsFromArray:items]; }] ritl_map:^id _Nonnull(NSIndexPath *_Nonnull index) { return [self.dataSource assetAtIndexPath:index]; }]; ///提前停止缓存的资源 NSArray *removedAssets = [[[removedRects ritl_map:^id _Nonnull(NSValue * _Nonnull rectValue) { return [self.collectionView indexPathsForElementsInRect:rectValue.CGRectValue]; }] ritl_reduce:@[] reduceHandler:^NSArray * _Nonnull(NSArray * _Nonnull result, NSArray * _Nonnull items) { return [result arrayByAddingObjectsFromArray:items]; }] ritl_map:^id _Nonnull(NSIndexPath *_Nonnull index) { return [self.dataSource assetAtIndexPath:index]; }]; CGSize thimbnailSize = ((UICollectionViewFlowLayout *)self.collectionView.collectionViewLayout).itemSize; //更新缓存 [self.dataSource.imageManager startCachingImagesForAssets:addedAssets targetSize:thimbnailSize contentMode:PHImageContentModeAspectFill options:nil]; [self.dataSource.imageManager stopCachingImagesForAssets:removedAssets targetSize:thimbnailSize contentMode:PHImageContentModeAspectFill options:nil]; //记录当前位置 self.previousPreheatRect = preheatRect; } - (NSDictionary *> *)differencesBetweenRects:(CGRect)old new:(CGRect)new { if (CGRectIntersectsRect(old, new)) {//如果区域交叉 NSMutableArray * added = [NSMutableArray arrayWithCapacity:10]; if (CGRectGetMaxX(new) > CGRectGetMaxX(old)) {//表示左滑 [added addObject:[NSValue valueWithCGRect:CGRectMake(CGRectGetMaxX(old), new.origin.y, CGRectGetMaxX(new) - CGRectGetMaxX(old), new.size.height)]]; } if(CGRectGetMinX(old) > CGRectGetMinX(new)){//表示右滑 [added addObject:[NSValue valueWithCGRect:CGRectMake(CGRectGetMinX(new), new.origin.y, CGRectGetMinX(old) - CGRectGetMinX(new), new.size.height)]]; } NSMutableArray * removed = [NSMutableArray arrayWithCapacity:10]; if (CGRectGetMaxX(new) < CGRectGetMaxX(old)) {//表示右滑 [removed addObject:[NSValue valueWithCGRect:CGRectMake(CGRectGetMinX(new), new.origin.y, CGRectGetMaxX(old) - CGRectGetMaxX(new), new.size.height)]]; } if (CGRectGetMinX(old) < CGRectGetMinX(new)) {//表示左滑 [removed addObject:[NSValue valueWithCGRect:CGRectMake(CGRectGetMinX(new), new.origin.y, CGRectGetMinX(new) - CGRectGetMinX(old), new.size.height)]]; } return @{RITLHorBrowseDifferencesKeyAdded:added, RITLHorBrowseDifferencesKeyRemoved:removed}; }else { return @{RITLHorBrowseDifferencesKeyAdded:@[[NSValue valueWithCGRect:new]], RITLHorBrowseDifferencesKeyRemoved:@[[NSValue valueWithCGRect:old]]}; } } - (void)scrollViewDidScroll:(UIScrollView *)scrollView { [self updateCachedAssets]; [self.collectionView.visibleCells makeObjectsPerformSelector:@selector(stop)]; //进行计算当前第几个位置 [self adjustScrollIndexWithContentOffset:scrollView.contentOffset scrollView:scrollView]; } /// 进行计算当前第几个位置 - (void)adjustScrollIndexWithContentOffset:(CGPoint)contentOffset scrollView:(UIScrollView *)scrollView { //根据四舍五入获得的index NSInteger index = [self indexOfCurrentAsset:scrollView]; self.cellRow = index; //获得资源 PHAsset *currentAsset = [self.dataSource assetAtIndexPath:[NSIndexPath indexPathForItem:index inSection:0]]; [self updateTopViewWithAsset:currentAsset]; } /// 根据偏移量获得当前响应到资源 - (NSInteger)indexOfCurrentAsset:(UIScrollView *)scrollView { //获得当前正常位置的偏移量 CGFloat contentOffsetX = MIN(MAX(0,scrollView.contentOffset.x),scrollView.contentSize.width); CGFloat space = 2 * RITLPhotosHorBrowseCollectionSpace; //根据四舍五入获得的index NSInteger index = @(round((contentOffsetX + space) * 1.0 / (space + RITL_SCREEN_WIDTH))).integerValue; return index; } #pragma mark - Update View - (void)updateTopViewWithAsset:(PHAsset *)asset { BOOL isSelected = [self.dataManager containAsset:asset]; RITLPhotosConfiguration *configuration = RITLPhotosConfiguration.defaultConfiguration; if (!configuration.containVideo) { //如果不包含视频 self.statusButton.hidden = (asset.mediaType == PHAssetMediaTypeVideo); } if (!configuration.containImage) { //如果不包含图片 self.statusButton.hidden = (asset.mediaType == PHAssetMediaTypeImage); } //进行属性隐藏设置 self.indexLabel.hidden = !isSelected; //视频隐藏编辑功能 self.bottomView.previewButton.hidden = (asset.mediaType == PHAssetMediaTypeVideo); if (isSelected) { self.indexLabel.text = @([self.dataManager.assetIdentiers indexOfObject:asset.localIdentifier] + 1).stringValue; } } /// 更新发送按钮 - (void)updateBottomSendButton { NSInteger count = self.dataManager.count; UIControlState state = (count == 0 ? UIControlStateDisabled : UIControlStateNormal); NSString *title; if (!RITLPhotosConfiguration.defaultConfiguration.isRichScan) { title = (count == 0 ? Localized(@"JX_Send") : [NSString stringWithFormat:@"%@(%@)",Localized(@"JX_Send"),@(count)]); }else { title = Localized(@"JX_Finish"); } self.bottomView.sendButton.enabled = !(count == 0); [self.bottomView.sendButton setTitle:title forState:state]; } /// 更新排版集合视图的状态 - (void)updateBrowseCollectionView { // NSInteger count = self.dataManager.count; // self.browseCollectionView.hidden = (count == 0); } #pragma mark - Getter -(UICollectionView *)collectionView { if (_collectionView == nil) { UICollectionViewFlowLayout * flowLayout = [[UICollectionViewFlowLayout alloc]init]; flowLayout.scrollDirection = UICollectionViewScrollDirectionHorizontal; flowLayout.minimumLineSpacing = 2 * RITLPhotosHorBrowseCollectionSpace; flowLayout.sectionInset = UIEdgeInsetsMake(0, RITLPhotosHorBrowseCollectionSpace, 0, RITLPhotosHorBrowseCollectionSpace); flowLayout.itemSize = @[@(RITL_SCREEN_WIDTH),@(RITL_SCREEN_HEIGHT)].ritl_size; _collectionView = [[UICollectionView alloc]initWithFrame:CGRectMake(-1 * RITLPhotosHorBrowseCollectionSpace, 0, self.ritl_width + 2 * RITLPhotosHorBrowseCollectionSpace, self.ritl_height) collectionViewLayout:flowLayout]; _collectionView.backgroundColor = UIColor.blackColor; //初始化collectionView属性 _collectionView.dataSource = self.dataSource; _collectionView.delegate = self; _collectionView.pagingEnabled = true; _collectionView.showsHorizontalScrollIndicator = false; //不使用自动适配 if (@available(iOS 11.0,*)) { _collectionView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever; } } return _collectionView; } - (UICollectionView *)browseCollectionView { if (_browseCollectionView == nil) { UICollectionViewFlowLayout * flowLayout = [[UICollectionViewFlowLayout alloc]init]; flowLayout.scrollDirection = UICollectionViewScrollDirectionHorizontal; // flowLayout.minimumLineSpacing = 2 * RITLPhotosHorBrowseCollectionSpace; // flowLayout.sectionInset = UIEdgeInsetsMake(0, RITLPhotosHorBrowseCollectionSpace, 0, RITLPhotosHorBrowseCollectionSpace); // flowLayout.itemSize = @[@(RITL_SCREEN_WIDTH),@(RITL_SCREEN_HEIGHT)].ritl_size; _browseCollectionView = [[UICollectionView alloc]initWithFrame:@[].ritl_rect collectionViewLayout:flowLayout]; _browseCollectionView.backgroundColor = self.bottomView.backgroundColor; //初始化collectionView属性 // _browseCollectionView.dataSource = self.dataSource; // _browseCollectionView.delegate = self; _browseCollectionView.hidden = true; _browseCollectionView.pagingEnabled = true; _browseCollectionView.showsHorizontalScrollIndicator = false; //不使用自动适配 if (@available(iOS 11.0,*)) { _browseCollectionView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever; } } return _browseCollectionView; } #pragma mark - Notification - (void)horBrowseTooBarChangedHiddenStateNotificationationHandler:(NSNotification *)notification { NSNumber *hiddenResult = [notification.userInfo valueForKey:@"hidden"]; if (hiddenResult) {//存在控制 /*self.browseCollectionView.hidden = */self.topBar.hidden = self.bottomView.hidden = hiddenResult.boolValue; if (hiddenResult.boolValue == false) {//如果是显示，需要更新状态 [self updateBrowseCollectionView]; } }else { BOOL beforeStatus = self.topBar.hidden; /*self.browseCollectionView.hidden = */self.topBar.hidden = self.bottomView.hidden = !beforeStatus; if (beforeStatus) {//如果是需要展示 [self updateBrowseCollectionView]; } } } - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context { if ([keyPath isEqualToString:@"count"] && [object isEqual:self.dataManager]) { // 预览功能现在是屏蔽状态 //self.bottomView.previewButton.enabled = !(count == 0); //发送按钮 [self updateBottomSendButton]; //选中的排版视图 [self updateBrowseCollectionView]; } else if([keyPath isEqualToString:@"hightQuality"] && [object isEqual:self.dataManager]){ BOOL hightQuality = [change[NSKeyValueChangeNewKey] boolValue]; self.bottomView.fullImageButton.selected = hightQuality; } } #pragma mark - action - (void)editImage { self.isEdit = NO; self.cell = (RITLPhotosBrowseImageCell *)[self.collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForRow:self.cellRow inSection:0]]; KKImageEditorViewController *editor = [[KKImageEditorViewController alloc] initWithImage:self.cell.imageView.image delegate:self]; editor.asset = [self.dataSource assetAtIndexPath:[NSIndexPath indexPathForRow:self.cellRow inSection:0]]; UINavigationController *vc = [[UINavigationController alloc] initWithRootViewController:editor]; [self presentViewController:vc animated:YES completion:nil]; } - (void)hightQualityShouldChanged:(UIButton *)sender { self.dataManager.hightQuality = !self.dataManager.hightQuality; } - (void)sendButtonDidClick:(UIButton *)sender { [RITLPhotosMaker.sharedInstance startMakePhotosComplete:^{ [self.collectionView.visibleCells makeObjectsPerformSelector:@selector(stop)]; [self.navigationController dismissViewControllerAnimated:true completion:nil]; }]; } - (void)assetStatusDidChanged:(UIButton *)sender { //获得当前的资源 PHAsset *asset = [self.dataSource assetAtIndexPath:[NSIndexPath indexPathForItem:[self indexOfCurrentAsset:self.collectionView] inSection:0]]; if (self.dataManager.count >= RITLPhotosConfiguration.defaultConfiguration.maxCount && ![self.dataManager containAsset:asset]/*是添加*/) { [g_server showMsg:Localized(@"JX_CannotSelectMorePhotos")]; return; }//不能进行选择 //进行修正 [self.dataManager addOrRemoveAsset:asset]; //更新top [self updateTopViewWithAsset:asset]; } #pragma mark- 照片编辑后的回调 - (void)imageDidFinishEdittingWithImage:(UIImage *)image asset:(PHAsset *)asset { self.cell.imageView.image = image; self.isEdit = YES; self.asset = asset; [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{ [PHAssetChangeRequest creationRequestForAssetFromImage:image]; } completionHandler:^(BOOL success, NSError * _Nullable error) { if (error) { NSLog(@"%@",@"保存失败"); [JXMyTools showTipView:@"图片编辑失败"]; } else { NSLog(@"%@",@"保存成功"); dispatch_async(dispatch_get_main_queue(), ^{ [self.navigationController popToRootViewControllerAnimated:YES]; }); } }]; } @end